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Computer turns on, but does not boot

Z

zoombini

n00b
Joined
May 18, 2009
Messages
20
I tried crossfire'ing two HD4890s earlier, but was unable to have it start (would not even power up..would light up for a split second). I figured that my powersupply wasn't good enough, so I called it quits and removed the second video card out. When I tried to boot it afterwards, the computer would turn on (but nothing showed up on the monitor). (The video card had 3 lit LED lights, and the fan was going at 100%) Apparently this is the video card's own POST procedure and the LEDs should've gone out if everything was okay and the fan would've lowered.

I figured that there was something wrong with my video card, so I replaced the 4890 with a GeForce 7900 I had lying around. I experienced the same problem (the computer would power on, but I was unable to get any video). To be sure, I brought my 4890 to see whether it was my video card and it worked fine on his computer.

I then though that something went wrong with the power supply after we tried to crossfire it (seeing that it couldn't boot up with two of the cards in). My friend brought hist 620w power supply over today, and after installing it, I encountered the same problem. Although it doesn't rule out that my powersupply is the problem (I didn't test my PSU in his computer) I guess it isn't likely that power supply is the problem.

We tested the RAM on his computer, and it worked fine as well.

I dismantled my computer, and put it back together but still a no go. I bought a case speaker today (to hear any POST beeps) but I was unable to hear any (which indicates that either it doesn't POST, or that the speaker is broken or incorrectly placed). I tried booting without RAM or a video card to force the POST beeps.

I've cleared BIOS (through the jumpers) and through taking out the CMOS battery but still nothing.

Edit: I removed all non-essential devices that I didn't need (CD drives, fans, hard drive) throughout the testing. Reseated RAM, video card multiple times. Tried using one stick of RAM.

My thoughts is that the problem is the motherboard (with the CPU unlikely being the culprit, but this is just a weak assumption).


Any thoughts? is it time to RMA the motherboard?

Thanks in advanced for any help.
 
Chck vgA slot and card for
Missing are scraped off pins on the
Board aswell oh and sry on my ipod
 
I also forgot to mention, but I don't know how significant this is, but the power button works when I want to turn on the computer, but it does not work when I want to power it off (even after pressing it for a few seconds). I don't think the restart button works either, but I am almost certain that the pins are correct.
 
All of those indicators seem to point to the motherboard, so if you can swap that without too much trouble it would definitely be my recommendation.
 
Unfortunately, I don't know anyone with an AM2+ board, nor do I have an extra.
 
Well, it sounds like time for a RMA to me :/

One thing I couldn't tell from the main description you gave - did this board ever actually work? Is it brand-new? If it just has never worked at all then that makes the MB an even more likely culprit in my mind. Maybe the CPU instead, but if you don't know anyone with an AM2+ board I imagine you also don't know anyone with a spare CPU of that kind.
 
Yeah. The computer was working fine until I decided to Crossfire. After that, it stopped working.

If I were to bring it into a computer repair shop, do you think they'll be able to test the CPU/mobo for me?
 
I would hope so, but it all depends on whether they have AM2+ stuff on-hand. That is recent enough that I would expect most places to have it, unless they are an Intel-only shop.
 
Make sure the speaker was plugged in properly. If not, try to force the beeps again without RAM or vidcard. If so, just RMA the board.
 
I tried the speakers both ways (swapping +/-), went and got a second speaker to make sure it wasn't the speaker that was broken. I took everything out of the case, placed the motherboard on the box, and tried to force the beeps without RAM and video card (but nothing). I will bring it to the computer shop to see if the guy can work some magic..if not I'll just RMA the mobo.
 
well im on my pc now.

I would think that the mb pci express slot may have had a pin that wasn't aligned right but wasn't touching something else. so whenever you used that slot it killed the board. Seen it alot with cheap boards on the memory slots.. I would rma. there is no quick fix board is dead. Sorry but there is nothing we can do. RMA.

edit:/// by any chane you reset the cmos?
 
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